Shm
[化] 简谐运动
🗣️ 情景例句
You've been a great help.
你帮了大忙。
He alone is poor who does not possess knowledge.
没有知识，才是贫穷。
She enjoyed herself making the assistant bring almost everything in the window before finally buying the dress she had first asked for.
她开心地迫使那位售货员把橱窗里几乎所有的东西都拿了出来，最后才买下了她最先要看的那一件。